Mayer vs nuclear physicist

Mayer and nuclear physicist both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mayer	Yes	No	No	No
nuclear physicist	Yes	No	No	No

Mayer (noun)	nuclear physicist (noun)
United States filmmaker (born in Russia) who founded his own film company and later merged with Samuel Goldwyn (1885-1957)	a physicist who specializes in nuclear physics
United States physicist (born in Germany) noted for her research on the structure of the atom (1906-1972)